Protective film for camera module and manufacturing method thereof

Abstract

A protective film for a camera module and a manufacturing method thereof, wherein the protective film is used to protect the lens of the camera module. The protective film includes a light-transmitting layer, a silicone layer and a molded part. The silicone layer has at least one first through hole, and the silicone layer is used to attach the protective film to the camera module. The molded part is located between the light-transmitting layer and the silicone layer, wherein the molded part has at least one second through hole, and each of the second through holes is aligned with the corresponding first through hole to form a receiving cavity, wherein when the protective film is used to be correspondingly attached to the camera module, the receiving cavity is used to accommodate a part of the lens of the camera module, so that light passing through the light-transmitting layer can be incident on the lens accommodated in the receiving cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of camera modules, and in particular to a protective film for a camera module and a manufacturing method thereof. Background Art

[0002] The lens in the camera module is an essential component for imaging, and the surface quality of the lens (such as surface cleanliness, etc.) is directly related to the quality of module imaging. As a direct protective assistant for the lens, the protective film plays a key role in preventing the lens from being scratched and contaminated during the turnover, transportation, and production of the product.

[0003] Generally speaking, after the camera module completes the AA process, it is necessary to attach a protective film in time to prevent the lens from being contaminated and scratched. The middle layer of the existing protective film is usually a foam piece made of hard foam material through a die-cutting process. Although the existing protective film can protect the lens of the camera module to a certain extent, the existing protective film has some defects and problems.

[0004] First, the foam part of the existing protective film will produce a lot of debris after die-cutting, so after the existing protective film is attached to the camera module, these debris are easy to stick to the lens, thereby contaminating the lens.

[0005] Second, since the foam part of the existing protective film contains bubbles, after the product is attached with the protective film, when vacuuming, the foam part is easily compressed and deformed, making the adhesive layer in the protective film easily stick to the lens, thereby contaminating the lens.

[0006] Third, when the existing protective film is torn off, the existing protective film is easily delaminated or broken, resulting in part of the protective film remaining on the camera module, which will seriously contaminate the lens.

[0007] Fourth, the foam part of the existing protective film is made by a die-cutting process, resulting in low processing accuracy, making it difficult to match the lens of the camera module. When the protective film is attached, the lens protection is often affected due to the inability to accurately match the size.

[0008] Finally, due to the limitation of the properties of the hard foam material itself, the narrowest surface of the foam part of the existing protective film cannot be further reduced, and the requirements for small size of increasingly smaller module products cannot be met. Summary of the invention

[0009] An object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same, which can protect the lens of the camera module to prevent the lens from being contaminated and / or scratched.

[0010] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same. In one embodiment of the present invention, the protective film can utilize a molded part to replace the foam part in the existing protective film, which helps to overcome the defects of the foam part caused by its own material, such as easy deformation, easy rupture, easy delamination, etc.

[0011] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same. In one embodiment of the present invention, the molded part of the protective film can be made by an injection molding process, which helps to improve the processing accuracy of the molded part so that it can be accurately matched with the lens of the camera module.

[0012] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same. In one embodiment of the present invention, the molded part is made of ABS material, which is less likely to generate debris and helps prevent the protective film itself from contaminating the lens.

[0013] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same. In one embodiment of the present invention, a molded part with a smaller narrow side can be made by injection molding, which helps to further produce a protective film with a smaller narrow side to meet the requirements of a smaller camera module for a protective film.

[0014] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same. In one embodiment of the present invention, the molded part is provided with a peripheral groove, which can be used to reserve space for a dispensing needle to avoid tearing off the protective film when assembling a dual-camera module or a multi-camera module, thereby helping to simplify the assembly process and shorten the assembly time.

[0015] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same, wherein, in one embodiment of the present invention, the protective film has a accommodating cavity, so that light passing through the light-transmitting layer can be incident on the lens of the camera module partially accommodated in the accommodating cavity, so that various performance tests can be performed on the camera module without tearing off the protective film.

[0016] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same, wherein, in one embodiment of the present invention, different parts of the molded part have different thicknesses to compensate for the height differences between different sub-camera modules in a dual-camera module or a multi-camera module.

[0017] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same, wherein, in one embodiment of the present invention, the protective film includes a colored Mylar layer so that the protective film can be distinguished by different colors.

[0018] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same. In one embodiment of the present invention, the protective film includes a color tear layer, which helps to provide a grip for a machine or human hand when applying or tearing the film.

[0019] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same. In one embodiment of the present invention, the protective film can prevent part of the protective film from remaining on the camera module due to delamination when the film is torn off, thereby avoiding contamination of the lens.

[0020] Another object of the present invention is to provide a protective film for a camera module and a method for manufacturing the same, wherein, in order to achieve the above-mentioned object, no expensive materials or complicated structures are required in the present invention. Therefore, the present invention successfully and effectively provides a solution, not only providing a simple protective film for a camera module and a method for manufacturing the same, but also increasing the practicality and reliability of the protective film for a camera module and a method for manufacturing the same.

[0021] In order to achieve at least one of the above-mentioned invention objectives or other objectives and advantages, the present invention provides a protective film for a camera module, which is used to protect the lens of the camera module, comprising:

[0022] a translucent layer;

[0023] a silicone layer, wherein the silicone layer has at least one first through hole, and the silicone layer is used to attach the protective film to the camera module; and

[0024] A molded part, wherein the molded part is located between the light-transmitting layer and the silicone layer, wherein the molded part has at least one second through hole, and each of the second through holes is aligned with the corresponding first through hole to form a receiving cavity, wherein when the protective film is used to be correspondingly attached to the camera module, the receiving cavity is used to receive a part of the lens of the camera module, so that light passing through the light-transmitting layer can be incident on the lens received in the receiving cavity.

[0025] In one embodiment of the present invention, the molded part is made of plastic or resin.

[0026] In one embodiment of the present invention, the molded part is made of ABS material.

[0027] In one embodiment of the present invention, the molded part is made by an injection molding process, an injection molding process, an etching process, or a photolithography process.

[0028] In one embodiment of the present invention, the molded part includes a first part and a second part extending integrally from the first part, wherein the thickness of the first part is greater than the thickness of the second part, and the second through hole of the molded part is respectively located in the first and second parts of the molded part.

[0029] In one embodiment of the present invention, the thicknesses of the first and second parts of the molded part are respectively designed according to the height of the sub-camera module in the dual-camera module to compensate for the height difference of the sub-camera module in the dual-camera module.

[0030] In one embodiment of the present invention, the molded part includes multiple parts with different thicknesses, and the thickness of each part in the molded part is designed according to the height of the sub-camera module in the multi-camera module to compensate for the height difference of the sub-camera module in the multi-camera module.

[0031] In one embodiment of the present invention, the molded part is provided with a peripheral groove, wherein the peripheral groove is located at the outer periphery of the molded part, so that the outer periphery of the molded part has a stepped structure for reserving space for the dispensing needle.

[0032] In one embodiment of the present invention, the shape and size of the peripheral groove of the molded part are designed according to the dispensing needle.

[0033] In one embodiment of the present invention, the sizes of the first and second through holes are designed according to the lens of the camera module to match the lens of the camera module.

[0034] In one embodiment of the present invention, the protective film further includes a first adhesive layer and a second adhesive layer, wherein the first adhesive layer is arranged between the light-transmitting layer and the molded part, and is used to bond the light-transmitting layer to one side of the molded part, and the second adhesive layer is arranged between the silicone layer and the molded part, and is used to bond the silicone layer to the other side of the molded part.

[0035] In one embodiment of the present invention, the first and second adhesive layers are both PET double-sided adhesives.

[0036] In an embodiment of the present invention, the protective film further includes a marking layer, wherein the marking layer is disposed between the light-transmitting layer and the first adhesive layer, and is used to distinguish the protective film through the marking layer.

[0037] In one embodiment of the present invention, the identification layer is a colored Mylar layer.

[0038] In an embodiment of the present invention, the silicone layer includes an attachment area and a tear-off area, wherein the tear-off area integrally extends outward from one side of the attachment area, and each of the first through holes is located in the attachment area.

[0039] In one embodiment of the present invention, the tear handle area of ​​the silicone layer is locally treated to eliminate stickiness.

[0040] In one embodiment of the present invention, the protective film further comprises a color tear layer, wherein the color tear layer is bonded to the tear area of ​​the silicone layer, and the color tear layer is located on a side of the silicone layer away from the molded part.

[0041] In one embodiment of the present invention, the light-transmitting layer is made of transparent PET material.

[0042] According to another aspect of the present invention, the present invention further provides a method for manufacturing a protective film, comprising the steps of:

[0043] Disposing a light-transmitting layer on one side of a molded part; and

[0044] A silicone layer is disposed on the other side of the molded part to form the protective film having an integrated structure, wherein the silicone layer has at least one first through hole, wherein the molded part has at least one second through hole, and each of the second through holes is aligned with the corresponding first through hole to form a accommodating cavity.

[0045] In one embodiment of the present invention, before the step of bonding a light-transmitting layer to one side of a molded part, the step further includes:

[0046] The molded part is produced by an injection molding process.

[0047] In one embodiment of the present invention, the molded part is provided with a peripheral groove so that the outer periphery of the molded part has a stepped structure for reserving space for the dispensing needle.

[0048] In one embodiment of the present invention, the thickness of each part of the molded part is designed according to the sub-camera modules in the camera module to compensate for the height difference between the sub-camera modules in the camera module.

[0049] In one embodiment of the present invention, the light-transmitting layer is bonded to the molded part via a first adhesive layer, and the silicone layer is bonded to the molded part via a second adhesive layer.

[0050] In one embodiment of the present invention, the method for manufacturing the protective film further comprises the steps of:

[0051] A marking layer is disposed between the light-transmitting layer and the first adhesive layer, and is used to distinguish the protective film through the marking layer.

[0052] In one embodiment of the present invention, the method for manufacturing the protective film further comprises the steps of:

[0053] A tear handle area of ​​the silicone layer is treated through a local non-sticky treatment process to eliminate the stickiness of the tear handle area.

[0054] In one embodiment of the present invention, the method for manufacturing the protective film further comprises the steps of:

[0055] A color tear-off layer is bonded to a tear-off region of the silicone layer, wherein the color tear-off layer is located on a side of the silicone layer away from the molded part.

[0056] Further objects and advantages of the present invention will be fully apparent from an understanding of the following description and the accompanying drawings.

[0057] These and other objects, features and advantages of the present invention will be more fully understood from the following detailed description, accompanying drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 The invention is an example of a protective film for a camera module according to an embodiment of the present invention.

[0059] Figure 2 Schematic diagram of an explosion of the protective film according to the above embodiment of the present invention.

[0060] Figure 3 is a schematic cross-sectional view of the protective film according to the above embodiment of the present invention.

[0061] Figure 4 and Figure 5 A first modified implementation of the protective film according to the above embodiment of the present invention is shown.

[0062] Figure 6 and Figure 7 A second modified implementation of the protective film according to the above embodiment of the present invention is shown.

[0063] Figure 8 and Fig. 9 A third modified implementation of the protection film according to the above embodiment of the present invention is shown.

[0064] Fig.10 and Fig.11 A fourth modified embodiment of the protective film according to the above embodiment of the present invention is shown.

[0065] Fig.124 is a schematic flow chart of a method for manufacturing a protective film according to an embodiment of the present invention. DETAILED DESCRIPTION

[0066] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0067] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0068] In the present invention, the term "one" in the claims and the specification should be understood as "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. Unless it is clearly indicated in the disclosure of the present invention that the number of the element is only one, the term "one" cannot be understood as unique or single, and the term "one" cannot be understood as a limitation on the quantity.

[0069] In the description of the present invention, it should be understood that "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through a medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0071] Reference Figures 1 to 3 As shown, a protective film according to an embodiment of the present invention is illustrated, wherein the protective film 10 includes a light-transmitting layer 11, a silicone layer 12, and a molded part 13, wherein the molded part 13 is located between the light-transmitting layer 11 and the silicone layer 12. The light-transmitting layer 11 is used to allow only light to pass through. The silicone layer 12 has at least one first through hole 120, and the silicone layer 12 is used to attach the protective film 10 to the camera module 20. The molded part 13 has at least one second through hole 130, and each second through hole 130 is aligned with the corresponding first through hole 120 to form a receiving cavity 100. When the protective film 10 is correspondingly attached to the camera module 20, the receiving cavity 100 can accommodate a portion of the lens 21 of the camera module 20 (such as the protruding portion of the lens 21), so that the light passing through the light-transmitting layer 11 can be injected into the lens 21 partially accommodated in the receiving cavity 100.

[0072] In this way, the protective film 10 prevents the lens 21 of the camera module 20 from being contaminated and / or scratched, and does not hinder the performance test of the camera module 20, so that various performance tests can be performed on the camera module 20 without tearing off the protective film 10, which helps to simplify the testing process of the camera module 20 and can effectively avoid increasing the manufacturing cost of the camera module 20 due to repeated tearing off and attaching of the protective film 10. It can be understood that the sizes of the first and second through holes 130 can be designed according to the lens 21 of the camera module 20, so that the accommodating cavity 100 can match the lens 21 of the camera module 20 to prevent the protective film 10 from blocking the light entering the lens 21 of the camera module 20, thereby ensuring that after the camera module is assembled, the various performance tests of the camera module are performed without tearing off the protective film 10. Of course, the size of the accommodating cavity 100 should be slightly larger than the protruding part of the lens 21, so as to reserve a gap between the side wall of the accommodating cavity 100 and the protruding part of the lens 21, which is not only convenient for film sticking or tearing, but also can prevent the protective film 10 from directly contacting the lens 21.

[0073] It is worth noting that the light-transmitting layer 11 of the protective film 10 can be, but is not limited to, implemented as a film layer made of a transparent PET (polyethylene terephthalate) material, so that the light-transmitting layer 11 has light-transmitting ability. In addition, the light-transmitting layer 11 covers the entire surface of the protective film 10, and is a protective layer that directly prevents foreign matter from contaminating the lens 21 of the camera module 20. It is understandable that the light-transmitting layer 11 can also be made of other light-transmitting materials, as long as it can prevent foreign matter from passing through the light-transmitting layer 11 while ensuring light-transmitting performance, and the present invention will not elaborate on this.

[0074] It is worth mentioning that although a protective film with a rectangular shape is used as an illustration in the drawings of the specification to illustrate the features and advantages of the protective film 10 of the present invention, those skilled in the art will understand that the shape of the protective film 10 disclosed in the drawings is only an example and does not constitute a limitation on the content and scope of the present invention. For example, in other examples of the protective film 10, the shape of the protective film 10 may also be any shape such as circular, elliptical, dumbbell-shaped, etc., that is, the present invention does not limit the shape of the protective film 10.

[0075] In the present invention, the molded part 13 is used as the middle layer of the protective film 10, mainly to make the protective film 10 have a certain thickness, which not only helps to increase the strength of the protective film 10 to maintain the flatness of the light-transmitting layer 11, but also ensures that the accommodating cavity 100 of the protective film 10 is compatible with the lens 21 of the camera module 20, so as to better protect the lens 21 of the camera module 20. For example, the depth of the accommodating cavity 100 can be slightly larger than the protruding part of the lens 21 through the thickness of the molded part 13, so that when the protective film 10 is attached to the camera module 20, the protruding part of the lens 21 is accommodated in the accommodating cavity 100 of the protective film 10, and a gap is reserved between the lens 21 and the light-transmitting layer 11 of the protective film 10, so as to better protect the lens 21 and prevent other foreign objects from entering the accommodating cavity 100 and contaminating the lens 21.

[0076] Furthermore, if Figure 2 and Figure 3 As shown, the protective film 10 also includes a first adhesive layer 14 and a second adhesive layer 15, wherein the first adhesive layer 14 is arranged between the light-transmitting layer 11 and the molded part 13, and is used to bond the light-transmitting layer 11 to one side of the molded part 13, wherein the second adhesive layer 15 is arranged between the silicone layer 12 and the molded part 13, and is used to bond the silicone layer 12 to the other side of the molded part 13, so as to form the protective film 10 with an integrated structure.

[0077] Exemplarily, the first and second adhesive layers 14 and 15 may be, but are not limited to, PET double-sided adhesives, so that the light-transmitting layer 11 and the silicone layer 12 are respectively and firmly bonded to the molded part 13 through the PET double-sided adhesives.

[0078] It is worth noting that since the viscosity of PET double-sided tape is usually greater than that of silicone, that is, the viscosity of the first and second adhesive layers 14 and 15 is greater than the viscosity of the silicone layer 12, the bonding strength between the light-transmitting layer 11 and the silicone layer 12 and the molded part 13 is respectively greater than the adhesion strength between the silicone layer 12 and the camera module 20. Therefore, when the protective film 10 is torn off from the camera module 20, the protective film 10 will not remain on the camera module 20 due to delamination, so as to avoid contaminating the lens of the camera module 20.

[0079] It is worth mentioning that in this embodiment of the present invention, the molded part 13 of the protective film 10 is made of plastic, so that the molded part 13 can be used to replace the foam part in the existing protective film as the middle layer of the protective film 10. In this way, the protective film 10 can use the inherent characteristics of plastic to overcome the defects caused by the material of the foam part itself. For example, the foam part will pollute the lens due to a lot of debris after die-cutting, but the molded part 13 will not or only produce very little debris due to the plastic material to avoid polluting the lens; for another example, the foam part will be severely deformed during vacuuming due to the bubbles contained in it, which will cause the glue layer on the upper side of the foam part to contact the lens, thereby polluting the lens of the camera module 20.

[0080] Exemplarily, the molded part 13 may be made of a plastic material that is resistant to high temperatures of 80° C. and low temperatures of -40° C. For example, the molded part 13 may be made of, but not limited to, ABS (Acrylonitrile butadiene Styrene copolymers). Of course, in other examples of the present invention, the molded part 13 may also be made of materials such as resins, polymer materials, etc., which will not be described in detail in the present invention.

[0081] Furthermore, the molded part 13 can be made by, but is not limited to, an injection molding process, which helps to improve the processing accuracy of the molded part 13, so that when the protective film 10 is attached, the protective film 10 can be accurately matched with the lens of the camera module 20 to better protect the lens. In other words, the molded part 13 is made by an injection molding process, rather than by die-cutting like the foam parts in the existing protective film, so that the processing accuracy of the molded part 13 is much greater than the processing accuracy of the foam parts, so that when the protective film 10 is attached, the protection of the lens will not be affected by the inability to accurately match the size. Of course, in the present invention, in addition to being made by a molding process such as an injection molding process, the molded part 13 can also be made by a molding process such as a molding process, an etching process, or a photolithography process.

[0082] In addition, in this example of the present invention, the molded part 13 is obtained by injection molding, and injection molding can produce a molded part with a smaller narrow side, and thus a protective film with a smaller narrow side can be produced to meet the small size requirements of the camera module of a smaller size. In this way, the protective film 10 of the present invention can completely overcome the problem that the foam part of the existing protective film cannot be further reduced in size due to the limitation of its own material.

[0083] In particular, since the molded part 13 is obtained through the above-mentioned molding process, the molded parts 13 of different thicknesses can be manufactured, so that the depth of the accommodating cavity 100 of the protective film 10 is also different. Therefore, for the lenses 21 of different types of the camera modules 20, although the heights of the protruding parts of the lenses 21 are different, resulting in the need for protective films 100 of different thicknesses, this problem can be easily solved by the molded parts 13 of different thicknesses. It is understandable that the thickness of the molded part 13 can be designed according to the lens 21 of the camera module 20, so that there is no need to obtain protective films of different thicknesses through multiple die cutting or multiple stacking of foam parts like the existing protective films, so as to simplify the manufacturing process of the protective film and reduce the manufacturing cost of the protective film.

[0084] In this embodiment of the present invention, Figure 2 and Figure 3 As shown, the protective film 10 further includes a marking layer 16 , wherein the marking layer 16 is disposed between the light-transmitting layer 11 and the first adhesive layer 14 to distinguish the protective film 10 .

[0085] Exemplarily, the identification layer 16 can be implemented as, but not limited to, a color Mylar layer, wherein one side of the color Mylar layer is bonded to the molded part 13 through the first adhesive layer 14, and the other side of the color Mylar layer is coated with glue for bonding the light-transmitting layer 11 to the other side of the color Mylar layer. In this way, the size or type of the protective film 10 can be distinguished by the different colors of the color Mylar layer, and the type of the camera module to which the protective film 10 is attached can also be distinguished. It is understandable that the identification layer 16 can also carry information such as numbers, text, patterns, etc. Since the identification layer 16 is directly disposed on the lower side of the light-transmitting layer 11, people can clearly see the identification layer 16 to distinguish the protective film 10.

[0086] It is worth noting that the protective film 10 is only used to protect the lens 21 of the camera module 20 during the turnover, transportation, and production of the camera module, but the protective film 10 needs to be torn off during use or other necessary processes. This requires that the protective film 10 should not only be firmly attached to the camera module 20 to protect the lens 21 of the camera module 20, but also be easy to tear off to prevent the protective film 10 from affecting the normal use or assembly of the module.

[0087] Therefore, in this embodiment of the present invention, if Figure 2 and Figure 3As shown, the silicone layer 12 of the protective film 10 may further include an attachment area 121 and a tearing area 122. Each of the first through holes 120 is located in the attachment area 121 of the silicone layer 12, and the attachment area 121 of the silicone layer 12 is used to directly contact the camera module 20 to attach the protective film 10 to the camera module 20. The tearing area 122 of the silicone layer 12 integrally extends outward from one side of the attachment area 121 to provide a gripper for a machine or a human hand, so that during the process of film attachment or tearing, the machine or the human hand can grasp the tearing area 122 of the silicone layer 12 to easily attach or tear off the protective film 10. Here, since the silicone layer 12 of the protective film 10 is in direct contact with the camera module 20, that is, the silicone layer 12 is located at the bottom layer of the protective film 10, when the protective film 10 is torn through the tearing area 122 of the silicone layer 12, the protective film 10 is more likely to be torn off completely and is not prone to rupture or delamination. Of course, in other examples of the present invention, the tearing area can also be implemented as a part of the molded part, which can also provide a grip for a machine or a human hand.

[0088] Furthermore, if Figure 2 and Figure 3 As shown, the protective film 10 may further include a color tearing hand layer 17, wherein the color tearing hand layer 17 is bonded to the tearing hand area 122 of the silicone layer 12, and the color tearing hand layer 17 is located on the side of the silicone layer 12 away from the molded part 13. In this way, when the protective film 10 is attached to the camera module 20 through the attachment area 121 of the silicone layer 12, the color tearing hand layer 17 is located between the camera module 20 and the tearing hand area 122 of the silicone layer 12, so as to prevent the tearing hand area 122 of the silicone layer 12 from being attached to the camera module 20, so as to facilitate grabbing the tearing hand area 122 to tear off the protective film 10. In addition, the color of the color tearing hand layer 17 can also facilitate observation and identification by machines or people, so as to accurately find the tearing hand area 122 of the silicone layer 12.

[0089] Of course, in some other examples of the present invention, the protective film 10 may not include the color tear layer 17, but instead treat the tear area 122 of the silicone layer 12 through a local non-sticky treatment process to eliminate the stickiness of the tear area 122, thereby preventing the tear area 122 of the silicone layer 12 from being attached to the camera module 20 due to its stickiness, so that a machine or human hand can easily grasp the tear area 122 of the silicone layer 12.

[0090] It is worth mentioning that although Figures 1 to 3In the above description, the protective film 10 includes only one accommodating cavity 100, and the features and advantages of the protective film 10 of the present invention are described. It can be understood by those skilled in the art that the attached Figures 1 to 3 The protective film 10 disclosed in the above description is only an example and does not constitute a limitation on the content and scope of the present invention. For example, in other examples of the protective film 10, the number of the accommodating cavities 100 may also exceed one so as to be applied to a dual-camera module or a multi-camera module.

[0091] For example, Figure 4 and Figure 5 A first variant implementation of the protective film 10 according to the above embodiment of the present invention is shown, wherein the molded part 13 of the protective film 10 is provided with two second through holes 130, and the silicone layer 12 of the protective film 10 is also provided with two first through holes 120, that is, the protective film 10 includes two accommodating cavities 100, so that the protective film 10 can be applied to the dual-camera module 20. In this way, when the protective film 10 is attached to the dual-camera module 20, the two lenses 21 of the dual-camera module 20 are respectively accommodated in the accommodating cavities 100 of the protective film 10, so that the two lenses 21 of the dual-camera module 20 are protected simultaneously by one protective film 10.

[0092] It is worth noting that, for dual-camera modules or multi-camera modules, using the same protective film 10 can not only more conveniently and accurately attach the protective film 10, but also facilitate tearing off the protective film 10, so as to reduce labor costs. However, for most dual-camera modules or multi-camera modules, the sub-camera modules included therein are often of different sizes (such as height), and the light-transmitting layer on the protective film needs to be kept flat. Therefore, the existing protective film usually requires foam parts of different thicknesses to compensate for this height difference. That is, the thickness of the foam part on the existing protective film corresponding to the sub-camera module with a large height is smaller, and the thickness of the foam part on the existing protective film corresponding to the sub-camera module with a small height is larger. Furthermore, because the foam parts of the existing protective film can only be produced by die-cutting foam parts of the required size of the dual-camera module or the multi-camera module on a whole piece of foam at the same time (in order to ensure the integration and precision requirements), and the whole piece of foam has no thickness difference, it is impossible to directly process foam parts with different thickness differences at one time. It often takes two or more die-cuttings or two or more pastings to make foam parts with different thicknesses. Such multiple processing techniques are not only inefficient, but also have poor processing precision.

[0093] In this example of the present invention, since the molded part 13 of the protective film 10 is made by injection molding, the thickness of each part of the molded part 13 can be designed according to the specific needs of the dual-camera module or the multi-camera module. In other words, the molded part 13 with different thicknesses in each part is made by injection molding, so that the thickness of the molded part 13 corresponding to the sub-camera module with a large height on the protective film 10 is small, and the thickness of the molded part 13 corresponding to the sub-camera module with a small height on the protective film 10 is large, so as to ensure that the protective film 10 matches the dual-camera module or the multi-camera module, and ensure that the light-transmitting layer 11 of the protective film 10 remains flat.

[0094] For example, Figure 6 and Figure 7 A second variant implementation of the protective film 10 according to the above-mentioned embodiment of the present invention is shown, wherein the molded part 13 of the protective film 10 includes a first part 131 and a second part 132 extending integrally from the first part 131, wherein the thickness of the first part 131 is greater than the thickness of the second part 132 (i.e., the thicknesses of the first and second parts 131 are different), and the first and second parts 131, 132 are both provided with a second through hole 130, so that the protective film 10 has two accommodating cavities 100, and the thicknesses of the various parts on the protective film 10 are different. In this way, when the protective film 10 is correspondingly attached to the dual-camera module 20, the first part 131 of the molding 13 of the protective film 10 corresponds to the sub-camera module with a smaller height in the dual-camera module 20, and the second part 132 of the molding 13 of the protective film 10 corresponds to the sub-camera module with a larger height in the dual-camera module 20, so that the height difference between the two sub-camera modules in the dual-camera module 20 can be compensated by the molding 13 to ensure that the light-transmitting layer 11 of the protective film 10 remains flat.

[0095] Of course, the dual-camera module or multi-camera module can also use two or more of the protective films 10 to protect the lens. For example, each sub-camera module in the dual-camera module or multi-camera module is correspondingly attached with a protective film 10. However, for the dual-camera module or multi-camera module, after completing the AA process, it is necessary to attach a bracket (not shown in the figure), and the attachment of the bracket is to draw glue between the bracket and the sub-camera module to fix the bracket to the sub-camera module, so that the bracket and the sub-camera module are both fixed in position to assemble the dual-camera module or multi-camera module. However, the foam parts in the existing protective film are obtained by a die-cutting process, resulting in vertical edges on all sides of the foam parts, and no operating space can be reserved for the dispensing needle. In this way, when the bracket is attached, the dispensing needle will interfere with the existing protective film, so the existing protective film has to be torn off first, and the protective film has to be re-attached after the bracket is assembled. This will not only increase the number of steps and costs in the camera module manufacturing process, but also reduce the production efficiency of the camera module.

[0096] In the present invention, the Figure 8 and Fig. 9 A third variant implementation of the above embodiment of the present invention is shown, wherein the molded part 13 made by the injection molding process in the protective film 10 may be provided with a peripheral groove 133, so that the outer periphery of the molded part 13 has a stepped structure through the peripheral groove 133, which is used to reserve an operating space for the dispensing needle 30. In this way, without tearing off the protective film 10, the dispensing needle 30 can be used to dispense glue around the protective film 10 for bracket assembly, thereby eliminating the film tearing process before the bracket is attached or the film sticking process after the bracket is attached, thereby greatly reducing the processing time of the camera module. At the same time, this also saves the manpower required for film sticking and tearing, and avoids wasting the protective film 10 to reduce costs.

[0097] It is worth noting that since the glue dispensing and bracket attachment can be performed without tearing off the protective film 10, it is possible to prevent dirt or glue from contaminating the lens 21 of the camera module 20 during the glue dispensing process; it is also possible to prevent the lens 21 from being scratched during the bracket attachment process.

[0098] Attached Fig.10 and Fig.11A fourth variant implementation manner according to the above-mentioned embodiment of the present invention is shown, wherein the protective film 10 is provided with two accommodating cavities 100, wherein the molded part 13 of the protective film 10 is provided with the peripheral groove 133 to reserve space for the dispensing needle around the protective film 10. In addition, the thickness of the first part 131 of the molded part 13 is greater than the thickness of the second part 132, and the upper surface of the molded part 13 remains flat. In this way, the protective film 10 can not only reserve space for the dispensing needle, so that dispensing or bracket assembly can be performed without tearing off the protective film 10; it can also make up for the height difference between the sub-camera modules in the dual-camera module 20, so as to ensure that the light-transmitting layer 11 of the protective film 10 remains flat, so as to better protect the lens 21 of the dual-camera module 20.

[0099] According to another aspect of the present invention, the present invention further provides a method for manufacturing a protective film. Specifically, Fig.12 As shown, the manufacturing method of the protective film 10 comprises the steps of:

[0100] S420: Disposing a light-transmitting layer 11 on one side of a molded part 13; and

[0101] S430: Dispose a silicone layer 12 on the other side of the molded part 13 to form the protective film 10, wherein the silicone layer 12 has at least one first through hole 120, wherein the molded part 13 has at least one second through hole 130, and each of the second through holes 130 is aligned with the corresponding first through hole 120 to form a accommodating cavity 100.

[0102] In this example of the present invention, Fig.12 As shown, the manufacturing method of the protective film 10 further includes the following steps before step S420:

[0103] S410: Produce the molded part 13 through a molding process.

[0104] In one example of the present invention, the thickness of each part of the injection-molded molded part 13 is designed according to the sub-camera module in the camera module 20 .

[0105] In an example of the present invention, the injection molded molded part 13 is provided with a peripheral groove 133 so that the outer periphery of the molded part 13 has a stepped structure for reserving space for the dispensing needle.

[0106] In an example of the present invention, the light-transmitting layer 11 is bonded to one side of the molded part 13 through a first adhesive layer 14 , and the silicone layer 12 is bonded to the other side of the molded part 13 through a second adhesive layer 15 .

[0107] In this example of the present invention, Fig.12 As shown, the manufacturing method of the protective film 10 further includes the steps of:

[0108] S440 : disposing a marking layer 16 between the light-transmitting layer 11 and the molded part 13 , so as to distinguish the protective film 10 through the marking layer 16 .

[0109] In this example of the present invention, Fig.12 As shown, the manufacturing method of the protective film 10 further includes the steps of:

[0110] S450: treating a tear-off region 122 of the silicone layer 12 through a local non-sticky treatment process to eliminate the stickiness of the tear-off region 122 .

[0111] In another example of the present invention, Fig.12 As shown, the manufacturing method of the protective film 10 further includes the steps of:

[0112] S450 ′: bonding a colored tear-off layer 17 to a tear-off region 122 of the silicone layer 12 , wherein the colored tear-off layer 17 is located on a side of the silicone layer 12 away from the molded component 13 .

[0113] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A protective film for a camera module, used to protect the lens of the camera module, characterized in that: include: a translucent layer; a silicone layer, wherein the silicone layer has at least one first through hole, and the silicone layer is used to attach the protective film to the camera module; as well as A molded part, wherein the molded part is located between the light-transmitting layer and the silicone layer, wherein the molded part has at least one second through hole, and each of the second through holes is aligned with the corresponding first through hole to form a accommodating cavity, wherein when the protective film is used to be correspondingly attached to the camera module, the accommodating cavity is used to accommodate a part of the lens of the camera module, so that light passing through the light-transmitting layer can be incident on the lens accommodated in the accommodating cavity, wherein the molded part is made of plastic or resin, wherein the molded part includes a first part and a second part extending integrally from the first part, wherein the thickness of the first part is greater than the thickness of the second part, and the second through holes of the molded part are respectively located in the first and second parts of the molded part, wherein the molded part is made by an injection molding process, an etching process or a photolithography process.

2. The protective film according to claim 1, wherein: The molded part is made of ABS material.

3. The protective film according to claim 1, wherein The thicknesses of the first and second parts of the molded part are respectively designed according to the height of the sub-camera module in the dual-camera module to compensate for the height difference of the sub-camera module in the dual-camera module.

4. The protective film according to claim 1, wherein The molded part includes a plurality of parts with different thicknesses, and the thickness of each part in the molded part is respectively designed according to the height of the sub-camera module in the multi-camera module to compensate for the height difference of the sub-camera module in the multi-camera module.

5. The protective film according to any one of claims 1 to 4, wherein: The molded part is provided with a peripheral groove, wherein the peripheral groove is located at the outer periphery of the molded part, so that the outer periphery of the molded part has a stepped structure, which is used to reserve space for the dispensing needle.

6. The protective film according to claim 5, wherein: The shape and size of the peripheral groove of the molded part are designed according to the dispensing needle.

7. The protective film according to any one of claims 1 to 4, wherein: The sizes of the first and second through holes are designed according to the lens of the camera module to match the lens of the camera module.

8. The protective film as described in any one of claims 1 to 4, further comprising a first adhesive layer and a second adhesive layer, wherein the first adhesive layer is arranged between the light-transmitting layer and the molded part, and is used to bond the light-transmitting layer to one side of the molded part, and the second adhesive layer is arranged between the silicone layer and the molded part, and is used to bond the silicone layer to the other side of the molded part.

9. The protective film according to claim 8, wherein: The first and second adhesive layers are both PET double-sided adhesives. 10 . The protective film according to claim 8 , further comprising a marking layer, wherein the marking layer is disposed between the light-transmitting layer and the first adhesive layer, and is used to distinguish the protective film through the marking layer.

11. The protective film according to claim 10, wherein: The identification layer is a color Mylar layer.

12. The protective film according to any one of claims 1 to 4, wherein: The silicone layer includes an attachment area and a tear-off area, wherein the tear-off area integrally extends outward from one side of the attachment area, and each of the first through holes is located in the attachment area.

13. The protective film according to claim 12, wherein: The tear-hand area of ​​the silicone layer is locally treated to eliminate stickiness.

14. The protective film according to claim 12, further comprising a color tear layer, wherein the color tear layer is adhered to the tear region of the silicone layer, and the color tear layer is located on a side of the silicone layer away from the molded part.

15. The protective film according to any one of claims 1 to 4, wherein: The light-transmitting layer is made of transparent PET material.

16. The method for manufacturing a protective film according to any one of claims 1 to 15, characterized in that: Includes steps: Disposing a light-transmitting layer on one side of a molded part; and A silicone layer is disposed on the other side of the molded part to form the protective film, wherein the silicone layer has at least one first through hole, wherein the molded part has at least one second through hole, and each second through hole is aligned with the corresponding first through hole to form a receiving cavity.

17. The method for manufacturing a protective film according to claim 16, further comprising the steps of: The molded part is manufactured through a molding process.

18. The method for producing a protective film according to claim 17, wherein: The molded part is provided with a peripheral groove so that the outer peripheral edge of the molded part has a stepped structure, which is used to reserve space for the dispensing needle.

19. The method for producing a protective film according to claim 17, wherein: The thickness of each part of the molded part is designed according to the sub-camera modules in the camera module to compensate for the height difference between the sub-camera modules in the camera module.

20. The method for producing a protective film according to any one of claims 16 to 19, wherein: The light-transmitting layer is bonded to the molded part through a first adhesive layer, and the silicone layer is bonded to the molded part through a second adhesive layer.

21. The method for manufacturing a protective film according to claim 20, further comprising the steps of: A marking layer is disposed between the light-transmitting layer and the first adhesive layer, and is used to distinguish the protective film through the marking layer.

22. The method for manufacturing a protective film according to any one of claims 16 to 19, further comprising the steps of: A tear handle area of ​​the silicone layer is treated through a local non-sticky treatment process to eliminate the stickiness of the tear handle area.

23. The method for manufacturing a protective film according to any one of claims 16 to 19, further comprising the steps of: A color tear-off layer is bonded to a tear-off region of the silicone layer, wherein the color tear-off layer is located on a side of the silicone layer away from the molded part.

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